Half to wilhelm thomas



(No Model.) 2 Sheets-Sheet 1.

J-. PLEISGHER.

SAFETY APPARATUS FOR GARBO-NIG A011) GAs FLASKS.

No. 412,702. Patented Oct. 8, 1889.

N, PEYERS. Pholu-Lilhngraphar. washin ton. D4 6.

(No Model.) 1 Y 2 Sheets-Sheet 2.

v J. PLE IS GHER, V SAFETY APPARATUS FOR GARBONIG: ACID GAS PLASKS. No. 412,702; Patented 001;. 8, 18 89.

WITNESSES:

Tj UNITED STATES PATENT OFFICE.

J OHANNES FLEISOHER, OF FRANKFORT-ON-THE-MAIN, ASSIGNOR OF ONE- HALF TO WILHELM THOMAS, OF OFFENBAOH-ON-THE-MAIN, GERMANY.

SAFETY APPARATUS FOR CARBONIC-AClD-GAS FLASKS.

SPECIFICATION forming part of Letters Patent No. 412,702, dated October 8, 1889. Application filed June 15, 1889. Serial No.3lfl,518. (No model.) Patented in Germany June 17, 1888, No. 46,583.

To aZZ whom it may concern.-

Be it known that I, JOHANNES FLEISCHER, a subject of the Emperor of Germany, and a resident of Frankfort-on-the-lvlain, Germany, have invent-ed a certain new and useful Improvement in Safety .Appliances for High- Pressure Receptacles, (partly. patented by German Letters Patent No. 46,583, June 17, 1888,) of which the following is a specification.

This invention relates to safety-cages for V enveloping or confining receptacles containdrawings, forming part of this specification,

ing fluids under high pressure, and particularly .the iron, steel, or other bottles or tubular flasks in which carbonic-acid or other gases liquefied under pressureare manufactured or contained, so as to guard against accidents in case the ends of the receptacle should blow out or it should burst laterally.

These safety-cages have generally heretofore been made to rigidly confine the bottle or receptacle, and thus take the shock of explosion simultaneously with the bottle or receptacle.

My invention consists, mainly, in making the safety-cage elastic, so as to absorb the shock of explosion gradually, andthus greatly reduce the strain before the limit of elasticity of the cage is reached, whereby danger of the cage fracturing, and thus permitting the fragments of the receptacle to be scattered,is entirely obviated.

In order that my invention may .be fully understood, I shall first describe in detail the mode in which the same may be carried into effect, and then point out its distinctive feature in the claims.

Reference is to be had to the accompanying in which- Figure 1 is a side view of a high-pressure flask provided with a safety-cage embodying my invention. Fig. 2 is a view of the upper end of the same. Fig. 3 is a detail view of a part of one of the longitudinal members of said cage. Fig. 4 is a view illustrating a modified construction of the said members of the cage. Fig. 5 is a sectional end view on the line X X, Fig. 1. Fig. 6illustrates amodified form of circumferential cage member. Figs. 7 and 8 are sectional side and top views, respectively, illustrating a modified form of safety-cage. Figs. 9 and 10 are similar views of another modification.

Like letters of reference denote corresponding parts in the various figures.

In the form of my invention illustrated in Figs. 1, 2, 3, and 5 the safety-cage is constructed of a number of longitudinal strips d, of iron or other appropriate material, equally spaced around the body of the high-pressurefiask or receptacle A, and connected by intermediate bands 2', surrounding the receptacle A. The upper and lower ends of the longitudinal strips 01 are bent inward and secured to end plates 0 to confine the ends of the receptacle A, the upper plate 0 being annular to surround the neck B of the receptacle. The cage is made somewhat longer than the body of the receptacle A, and a strong rubber or spiral spring 6 is interposed between the bottom of the receptacle and the lower end plate 0, a thimble Z being introduced into the cage to receive the end of the spring e and prevent blow out, the explosive energywill be absorbed by the spring or springs e and the cage remain intact, thus preventing damage by scattering of the fragments of the receptacle. To prevent damage from lateral bursting of the re-. ceptacle, the circumferential bands 1' are lined with rubber or other elastic rings 0, as shown in Fig. 5, which in like manner afiordayielding support for the circumference of the receptacle, and allow any fracture that may occur to enlarge gradually and absorb most of thestrain before the strength of the bands i is tried. Instead of connect-ing the sections of the longitudinal members at by bolts and slots g, the sections may be connected, as shown in Fig. 4:, by strong springs k,inwhich case the spring or springs e maybe dispensed ICO with. Further, in lieu of lining the circumferential members 'i with elastic rings 0, the

said members may be of elastic metal and of a shape, as that shown in Fig. 6, to bear yield- 5 ingly upon the sides of the receptacle.

In the modification shown in Figs. 7 and 8 perforated sheet-metal safety-cages Z are employed instead of the skeleton form previously described, and separate cages screwed upon TO the respective end parts of the receptacle A,

the elastic bearings for the ends of the receptacle being afforded by interposed springcushions c, as in the form shown in Figs. 1, 2, 3, and 5.

In the modification shown in Figs. 8 and 9 a single perforated sheet-metal cage D is employed, completely enveloping the receptacle, the cage D being closed at the bottom and containing thereat a spring-cushion c and 20 having an annular plate 0 attached to its upper end by brackets c and screw-bolts, and bearing 011 the upper end or shoulder of the receptacle. The perforations permit the escape of the gas in case of fracture of the con- 2 5 fined receptacle.

I claim as new and desire to secure by Letters Patent of the United States of America- 1. The combination, with a receptacle of the character described, of a reticulate cage completely enveloping the receptacle or the weaker wall thereof, and provided with an elastic internal bearing, against which the wall of the receptacle rests, substantially as described.

2. The herein-described safety apparatus for high-pressure receptacles, consisting of a reticulate cage adapted to completely envelop the receptacle or the weaker Wall thereof, and provided with an elastic internal bearing for the wall of the receptacle, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOIIANNES FLEISCIIER.

\Vitnesses:

FRANZ HASSLACHER, JOSEPH PATRICK. 

